Vagaries of structure, 104 Velleius dilatatus, 38 Vespa sylvestris, 36 Walls, 12 Wasps, social, 35 -- solitary, 24 Waspy coloration, 120, 121 Wings, 110 -- cells, 112, 133 -- folded, 24, 28 -- hooks, 110 -- nervures, 133 Workers, 4 Wrens' nests, 41